Figure 10.2 is a lateral view of a fetal pig. Highlighted on the head of the pig there are external ears or pinnae. On the pig’s snout there are external nostrils or nares. In the middle of the head are the eyelids. On the pig’s ventral surface is the umbilical cord. Anterior of the body is the shoulder and elbows. Distal to the elbow is the wrist. Distal to the wrist are the digits. Posteriorly on the body is the hip. Distal to the hip is the knee. Distal to the knee is the ankle. Posterior to the hip is the scrotal sac and the tail.

• On the head of the pig there are external ears or pinnae. These help the pig hear by focusing sound into the middle ear.
• On the pigs snout there are external nostrils or nares. The snout is specially designed with a round disk of cartilage on its end to help the pig dig in the ground in search of food like roots and truffles.
• On the chin there is a small tuft of sensory hairs called vibrissae. These help them feel around in the dark.
• On the pigs ventral surface is the umbilical cord. These are fetal pigs so they still have this fetal structure.
• Within the umbilical cord there are 3 blood vessels; 2 small umbilical arteries that carry blood containing waste from the fetus to the placenta and one large umbilical vein, which carries oxygen and nutrients from the placenta to the fetus.
• Use Figure 10.2 to help you locate the external anatomical structures including the elbow, wrist, knee and ankle.